Eos GNSS Tools for Windows

Eos Tools and Apps - Eos GNSS Tools for Windows

About Eos GNSS Tools

Eos GNSS Tools is an NTrip Client from Eos Positioning Systems®, Inc. (Eos). The app is designed to receive GNSS differential corrections (RTK or DGNSS) from a Caster or Server over the Internet. It is a must when your field data collection software does not include a built-in NTrip client. Eos GNSS Tools connects to the Arrow Series receiver and handles the two-way communication to send RTK corrections received from the Internet and to receive the NMEA messages. “Positioning data from the Arrow is made available to your field data collection software over a virtual com port or a TCP/IP port.

Key Features

  • Supports both Direct IP and NTrip Protocols
  • Ability to connect to an external radio (Bluetooth®or cabled)
  • Output receiver’s NMEA to Virtual or TCP/IP Port
  • Displays detailed positioning information
  • User-configurable audible alarms‏
  • Terminal emulator to send commands to the Arrow Series™ receiver
  • Seeding features for L-Band/Atlas™ satellite corrections
  • Spy Com port to monitor an external device


Windows 7, Windows 8 and Windows 10 (32 and 64-bit)

Latest Version

Eos GNSS Tools (v1.8.7332) Release Notes (2020/01/29):

  1. Optimized packet handling on Bluetooth connection to prevent buffer overflow
  2. Improved connection stability for NTRIP and DIP
  3. Fixed a bug with NTRIP Auto-Connect
  4. Improved COM Port connectivity
  5. Fixed a bug of truncated NMEA messages in Terminal & Virtual COM port
  6. Overall stability improvements


In order to fully take advantage of these major enhancements, we strongly recommend updating your Arrow Bluetooth Communication firmware to version 2.2.905 or later.

To update the Bluetooth firmware an iOS device is required (iPhone, iPad or iPad mini):
– Download Eos Tools Pro from the App Store from an iOS device

– Pair the Arrow via Bluetooth with the device (from the Bluetooth settings)

– Launch Eos Tools Pro and you will be prompted to update the Bluetooth Communication Firmware

– Answer “Yes” and wait for update completion

To verify the Bluetooth Communication Firmware version, tap on the “I” (Info) icon on the top right corner of the screen.

Have a Question?

For technical support, questions about Eos tools and apps, feedback, or bug reporting, please contact Eos support.

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